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pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using Alkalinity titrator, CTD and other instruments from the HESPERIDES in the North Atlantic Ocean and South Atlantic Ocean from 2001-03-05 to 2001-04-17 (NCEI Accession 0108096)

INVESTIGATORS:
Aída F. Ríos - Institute of Marine Research Vigo (IIM)
Fiz F. Pérez ORCID logo - Institute of Marine Research Vigo (IIM)

PACKAGE DESCRIPTION: This dataset includes chemical, discrete sample, physical and profile data collected from HESPERIDES in the North Atlantic Ocean and South Atlantic Ocean from 2001-03-05 to 2001-04-17 and retrieved during cruise (HE073) and 29HE20010305. These data include ALKALINITY, DISSOLVED OXYGEN, HYDROSTATIC PRESSURE, NITRATE, NITRITE, PHOSPHATE, Potential temperature (theta), SALINITY, SILICATE, WATER TEMPERATURE and pH. The instruments used to collect these data include Alkalinity titrator, CTD, Spectrophotometer for pH measurement and bottle. These data were collected by Aida F. Ríos and Fiz Pérez of Instituto de Investigaciones Marinas; Departamento de Oceanograffa as part of the CARINA/29HE20010305, CARINA/29HE20010305_ATL, CARINA/29HE20010305_SO, CLIVAR FICARAM II, CARINA FICARAM II data set. The International CLIVAR Global Ocean Carbon and Repeat Hydrography Program carries out a systematic and global re-occupation of select WOCE/JGOFS hydrographic sections to quantify changes in storage and transport of heat, fresh water, carbon dioxide (CO2), and related parameters.

CITE AS: Pérez, Fiz F.; Ríos, Aída F. (2013). pH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using Alkalinity titrator, CTD and other instruments from the HESPERIDES in the North Atlantic Ocean and South Atlantic Ocean from 2001-03-05 to 2001-04-17 (NCEI Accession 0108096). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.clivar_ficaram_ii. Accessed [date].


DATA PACKAGES RELATED TO THIS ONE:
none;
IDENTIFICATION INFORMATION FOR THIS DATA PACKAGE:
NCEI ACCESSION: 0108096
NCEI DOI: https://doi.org/10.3334/cdiac/otg.clivar_ficaram_ii
EXPOCODE: (HE073); 29HE20010305;
CRUISE ID: (HE073); 29HE20010305;
SECTION/LEG: 29HE20010305; CLIVAR A17; FICARAM II;

TYPES OF STUDY:
Discrete measurement;Profile;

TEMPORAL COVERAGE:
START DATE: 2001-03-05
END DATE: 2001-04-17

SPATIAL COVERAGE:
NORTH: 40.002
WEST: -55.6807
EAST: -7.3873
SOUTH: -48.3502

GEOGRAPHIC NAMES:
Atlantic Ocean;

PLATFORMS:
R/V Hesperides (ID: 29HE);

RESEARCH PROJECT(S):
none;

VARIABLES / PARAMETERS:

Dissolved Inorganic Carbon
Abbreviation: DIC
Observation type: discrete
In-situ / Manipulation / Response variable: In-situ observation
Measured or calculated: Calculated
Detailed sampling and analyzing information: was calculated from pHT25 and total alkalinity with the Mehrbach et al (1973) constants refitted by Dickson and Millero (1987).
Total alkalinity
Abbreviation: TA
Observation type: discrete
In-situ / Manipulation / Response variable: In-situ observation
Measured or calculated: Measured
Curve fitting method: Total Alkalinity (TA) was measured using potentiometric titrations with hydrochloric acid to a final pH of 4.40 (Pérez and Fraga, 1987). The electrodes were standardised using a buffer of pH 4.42 made in CO2 free seawater (Pérez et al., 2002).
Uncertainty: The uncertainties of alkalinity were +/-1.4 μmol kg-1,
Method reference: Pérez, F.F., Fraga, F., 1987. A precise and rapid analytical procedure for alkalinity determination. Marine Chemistry, 21, 169-182. Pérez, F.F., A.F. Ríos, T. Rellán, M. Alvarez. 2000. Improvements in a fast potentiometric seawater alkalinity determination. Ciencias Marinas, 26, 463-478.
pH
Abbreviation: pH
pH scale: SWS
Observation type: discrete
In-situ / Manipulation / Response variable: In-situ observation
Measured or calculated: Measured
Temperature of pH measurement: 25 Deg.C
Detailed sampling and analyzing information: pH was measured spectrophotometrically following Clayton and Byrne (1993).
Uncertainty: The uncertainties of pH were +/-0.002.
CTDTMP
Abbreviation: CTDTMP
Unit: DEG_C
Controlled vocabulary name: WATER TEMPERATURE
In-situ / Manipulation / Response variable: in-situ
CTDSAL
Abbreviation: CTDSAL
Controlled vocabulary name: SALINITY
In-situ / Manipulation / Response variable: in-situ
OXYGEN
Abbreviation: OXYGEN
Unit: UMOL/KG
Controlled vocabulary name: DISSOLVED OXYGEN
In-situ / Manipulation / Response variable: in-situ
SILCAT
Abbreviation: SILCAT
Unit: UMOL/KG
Controlled vocabulary name: silicate
In-situ / Manipulation / Response variable: in-situ
NITRAT
Abbreviation: NITRAT
Unit: UMOL/KG
Controlled vocabulary name: NITRATE
In-situ / Manipulation / Response variable: in-situ
NITRIT
Abbreviation: NITRIT
Unit: UMOL/KG
Controlled vocabulary name: NITRITE
In-situ / Manipulation / Response variable: in-situ
PHSPHT
Abbreviation: PHSPHT
Unit: UMOL/KG
Controlled vocabulary name: phosphate
In-situ / Manipulation / Response variable: in-situ
ALKALI
Abbreviation: ALKALI
Unit: UMOL/KG
Controlled vocabulary name: total alkalinity
In-situ / Manipulation / Response variable: in-situ
PH
Abbreviation: PH
Unit: SWS@25C
Controlled vocabulary name: pH
In-situ / Manipulation / Response variable: in-situ
PUBLICATIONS DESCRIBING THIS DATASET:
none;
ADDITIONAL INFORMATION:
none;
FUNDING AGENCY:

SUBMITTED BY: Alex Kozyr (Alex.Kozyr@noaa.gov)

SUBMISSION DATE: 2013-06-05